Three teenagers were killed, and four people are in the hospital after a two-car accident on the Belt Parkway in Brooklyn, police said.
Officers received a call at 11:35 p.m. Tuesday about a collision at Belt Parkway and 65th Street near Exit 1 in Bay Ridge.
Police sources said a black Cadillac was speeding eastbound when the driver locked his brakes as he approached a slower car. A Honda behind him, occupied by two women, then rear-ended the Cadillac…